ETF Losers, Octover 3rd 2012: United States Oil Fund ETF (NYSEARCA:USO): -4.14% PowerShares DB Energy Fund (NYSEARCA:DBE): -3.04% United States Natural Gas Fund (NYSEARCA:UNG): -2.65% United States Gasoline (NYSEARCA:UGA): -2.50% iShares MSCI South A...